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10pcs T5577 RFID Keyfobs 125khz Writable T5577 Key Fob Proximity ID Card Token Tag for Keyless Entry Access Control Systems & Security Lock - 5pcs Black + 5pcs Blue

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$9.99

$ 4 .99 $4.99

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1.:Drop Shaped - 5pcs Black + 5pcs Blue


2.Color:Blue


  • Package includes: 10pcs(5pcs black and 5pcs blue) 125kHz T5577 key fob. Standard 125Khz ID RFID keyfob, support 125khz proximity ID cards token tag duplication. Note: These are blank key tags without pre-programmed card numbers. You cannot directly add them to RFID locks or use a card reader to read them. Before using, please write data(card numbers) into them by a 125kHz RFID card writer first.
  • Product Size: 40*30*4mm(1.57*1.18*0.16 inch). High-Quality Copper Coil inside. Casing Material: ABS Plastic. Waterproof & Durable.
  • Applications: Hotel key chain, Access control systems, time attendance system, ticketing, packing card. This T5577 proximity key card can copy duplicate em4100 TK4100 ID Card Keychains tags.
  • Chip: ATMEL T5577 (compatible with other universal 125kHz tags). Frequency: 125kHz; Sensing Distance: 2.5 to 10 cm (1 to 4 inch); Data Storage Life: 10 Years. It's rewritable, and it can write in 125khz id format and H-ID WG 125khz format, can be customised to 26-bit Prox format. Compatible with T5567 T5577 EM4305.
  • Writable & Rewritable: can be writed by 125KHz RFID writer/copier, DO NOT work with ONITY SYSTEM and Proxmark3 RDV4. It can be erased and written 100,000 times. Suitable for making new and back-up tags. More product info and FAQ is listed in the Product Description. Please read them before purchase.


Product Description

t5577 rfid key fobs

Specification of Rewritable 125kHz T5577 RFID Keyfobs:

Frequency: 125kHz

Material: ABS casing + Copper Coil

Approx Size: 1.58*1.18*0.16 inch(40*30*4mm)

Chip: Original ATMEL T5577 (The best rewritable chip)

Storage Capacity: 330 bit (264 free bit availability)

Reading Distance: 2.5 - 10cm

Working Mode: Read-write modes

Important Note:

1. These are blank 125kHz T5577 keyfobs without pre-programmed card numbers. You cannot directly add them to RFID locks or use a card reader to read them.

2. Before use, please write data(card numbers) into the key fobs by a 125kHz RFID card writer firstly.

rfid key card t5577

FAQ of using 125kHz T5577 RFID Key Fobs

Question 1: Can I directly register these tags to my electronic lock?

Answer: No. These RFID key tags are blank tags without pre-programmed card numbers. The electronic locks cannot write or program a blank key tag. The electronic locks can read only. They read the card numbers from the programmed key fob and then verify it pass or not.

Question 2: Why I can't copy my old tags/cards to your tags by a card writer?

Answer: First, make sure that your card is the same RFID frequency of 125kHz. Not all RFID cards are 125kHz type. For example, the frequency of some popular key cards are 13.56MHz, which is also called NFC card or IC card. Cards of different frequencies are incompatible.

Second, make sure that your RFID card writer can work for the frequency 125kHz, and that you set it in the right channel. Some RFID card writers have several working frequencies.

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